Rockwell Automation 1757-ABRIO Process Remote I/O (RIO) Communication Interface Module - Manual (Page 46)

44 Publication 1757-UM007D-EN-P - December 2008
Chapter 3 Creating Generic Modules in AbRioCfg Software
The offset is an offset into the block transfer. It can range from 0 to
the length of the block transfer - 1. If the offset is followed by an “H”,
it refers to the high byte of the block transfer word. The length can
range from 8 to 504 and must be a multiple of 8. The sum of the
lengths in the data definitions must match the length in the “flag” line.
Example: 1771-IFE Module
The following definitions assign the underrange and overrange bits
from a 1771-IFE module to flag data.
Special Flag Read Data
In addition to any flag read data you define in the configuration file,
the Generic Module always has 8 bits of predefined flag read data.
This data is found at the beginning of the flag data for the module. It
consists of the following flags:
EXAMPLE
flag, 32
Bit Description
0 Good communication, set to 1 if the block transfer to the module is
updating, 0 otherwise.
1 BTR Raw underrange bit, set if the raw input to the module is less than the
defined raw minimum. The module sets the scaled input to NaN.
2 BTR raw overrange, set if the raw input to the module is greater than the
defined raw maximum. The module sets the scaled input to NaN.
3 Reserved
4 Reserved
5 BTW raw underrange, set if the calculated output value is less than the
defined raw minimum. The module clamps the output at the raw minimum.
6 BTW raw overrange, set if the calculated output value is greater than the
defined raw maximum. The module clamps the value at the raw maximum.
7 BTW NaN, set if the floating point value written from the host is NaN.
0,8
2H,8
4,16
flag, 32
1,16
2,16